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You want to deploy the BGP Generalized TTL Security Mechanism (GTSM) on the network.
Which three statements are correct in this scenario?
For directly connected EBGP peers, GTSM sets the BGP packet TTL to 255 and an inbound firewall filter discards BGP control packets with an incorrect TTL. R1 and R2 are directly connected routers in different autonomous systems, making them suitable for this single-hop EBGP implementation. The BGP relationships among R2, R3, and R4 are within AS 64513, so they are IBGP rather than the applicable single-hop EBGP GTSM case.
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